I-MediaWiki iyinjini ye-wiki yamahhala neyimithombo evulekile. Yakhelwe ukusetshenziswa ku-Wikipedia ngo-2002, futhi yanikezwa igama elithi "MediaWiki" ngo-2003. Ihlala isetshenziswa ku-Wikipedia kanye cishe nawo wonke amanye amawebhusayithi e-Wikimedia, okuhlanganisa i-Wiktionary, Wikimedia Commons kanye ne-Wikidata; lawa masayithi ayaqhubeka nokuchaza ingxenye enkulu yesidingo esisethelwe i-MediaWiki. I-MediaWiki yasungulwa nguMagnus Manske yathuthukiswa ngu-Lee Daniel Crocker. Ukuthuthukiswa kwayo kusukela ngaleso sikhathi kwahlanganiswa yi-Wikimedia Foundation.